Let me add some additional context. The password+totp is one of the two most popular implementations for supporting 2-factor with "legacy" systems where it's not possible to add an additional field (or form) to capture the TOTP. It's also common for implementing TOTP with systems like OpenVPN or with libpam.

Another request. I need '4 digit pin'+OTP It's a real hassle to touch 1password it fills in OTP then use the touch keyboard to back up to the front and enter the 4 digit pin. Why can't you guys just look for quotes and a + when entering the key at setup time. Like '1234'+OTPKEY then when it generates just concatenate the otp to the quoted string.